168666835020 has 48 divisors (see below), whose sum is σ = 472481882880. Its totient is φ = 44957370816.

The previous prime is 168666835013. The next prime is 168666835021. The reversal of 168666835020 is 20538666861.

It is not an unprimeable number, because it can be changed into a prime (168666835021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505840 + ... + 770199.

It is an arithmetic number, because the mean of its divisors is an integer number (9843372560).

Almost surely, 2^168666835020 is an apocalyptic number.

168666835020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168666835020 is an abundant number, since it is smaller than the sum of its proper divisors (303815047860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168666835020 is a wasteful number, since it uses less digits than its factorization.

168666835020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278254 (or 1278252 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 168666835020 in words is "one hundred sixty-eight billion, six hundred sixty-six million, eight hundred thirty-five thousand, twenty".